计算[-(-2x^2y)^3]^2·(-3x^3y^2)计算(1) [-(-2x^2 y)^3]^2·(-3x^3 y^2)(2) (x^2n-1)^2·(x^2)^3-2n·(-x^2n-3)
问题描述:
计算[-(-2x^2y)^3]^2·(-3x^3y^2)
计算(1) [-(-2x^2 y)^3]^2·(-3x^3 y^2)
(2) (x^2n-1)^2·(x^2)^3-2n·(-x^2n-3)
答
(1) [-(-2x^2 y)^3]^2·(-3x^3 y^2)=[-(-8x^6y^3)]^2*(-3x^3y^2)=64x^12y^6*(-3x^3y^2)=-192x^15y^8.(2)[x^(2n-1)]^2·(x^2)^(3-2n)·[-x^(2n-3)]=x^(4n-2)*x^(6-4n)*[-x^(2n-3)]=-x^(4n-2+6-4n+2n-3)=-x^(2n+1)...